5 papers
Habitual lifestyle timing explains circadian timing, but daily lifestyle changes do not, in free-living humans across 2000 days
Billy C. Smith, Zeel Pansara, Rosanne H. Timmerman +11
Background: Both between- and within-subject variations in circadian timing matter for health. If lifestyle changes could be used to regulate circadian timing, they would offer acc…
Multimodal Modeling of Ultradian Rhythms Using the Hankel Alternative View of Koopman (HAVOK) Analysis
Emmanuel Molefi, Billy C. Smith, Christopher Thornton +2
Ultradian rhythms - quasi-rhythmic fluctuations in behavior and physiology with periods shorter than 24 hours - are observed across various organisms, including humans. Despite the…
More variable circadian rhythms in epilepsy captured by long-term heart rate recordings from wearable sensors
Billy C. Smith, Christopher Thornton, Rachel E. Stirling +7
Objective: The circadian rhythm synchronizes physiological and behavioural patterns with the 24-hour light-dark cycle. Disruption to the circadian rhythm is linked to various healt…
Unsupervised Machine Learning Identifies Latent Ultradian States in Multi-Modal Wearable Sensor Signals
Christopher Thornton, Billy C. Smith, Guillermo M. Besne +2
Wearable sensors such as smartwatches have become ubiquitous in recent years, allowing the easy and continual measurement of physiological parameters such as heart rate, physical a…
Multivariate brain-cognition associations in euthymic bipolar disorder
Bethany Little, Carly Flowers, Andrew Blamire +5
Background: People with bipolar disorder (BD) tend to show widespread cognitive impairment compared to healthy controls. Impairments in processing speed (PS), attention, and execut…